code:
/*-
 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)socket.h	8.4 (Berkeley) 2/21/94
 * $FreeBSD: release/9.0.0/sys/sys/socket.h 220742 2011-04-17 16:04:39Z jilles $
 */

#ifndef _SYS_SOCKET_H_
#define	_SYS_SOCKET_H_

#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/_iovec.h>
#include <machine/_align.h>

/*
 * Definitions related to sockets: types, address families, options.
 */

/*
 * Data types.
 */
#if __BSD_VISIBLE
#ifndef _GID_T_DECLARED
typedef	__gid_t		gid_t;
#define	_GID_T_DECLARED
#endif

#ifndef _OFF_T_DECLARED
typedef	__off_t		off_t;
#define	_OFF_T_DECLARED
#endif

#ifndef _PID_T_DECLARED
typedef	__pid_t		pid_t;
#define	_PID_T_DECLARED
#endif
#endif

#ifndef _SA_FAMILY_T_DECLARED
typedef	__sa_family_t	sa_family_t;
#define	_SA_FAMILY_T_DECLARED
#endif

#ifndef _SOCKLEN_T_DECLARED
typedef	__socklen_t	socklen_t;
#define	_SOCKLEN_T_DECLARED
#endif

#ifndef _SSIZE_T_DECLARED
typedef	__ssize_t	ssize_t;
#define	_SSIZE_T_DECLARED
#endif

#if __BSD_VISIBLE
#ifndef _UID_T_DECLARED
typedef	__uid_t		uid_t;
#define	_UID_T_DECLARED
#endif
#endif

/*
 * Types
 */
#define	SOCK_STREAM	1		/* stream socket */
#define	SOCK_DGRAM	2		/* datagram socket */
#define	SOCK_RAW	3		/* raw-protocol interface */
#if __BSD_VISIBLE
#define	SOCK_RDM	4		/* reliably-delivered message */
#endif
#define	SOCK_SEQPACKET	5		/* sequenced packet stream */

/*
 * Option flags per-socket.
 */
#define	SO_DEBUG	0x0001		/* turn on debugging info recording */
#define	SO_ACCEPTCONN	0x0002		/* socket has had listen() */
#define	SO_REUSEADDR	0x0004		/* allow local address reuse */
#define	SO_KEEPALIVE	0x0008		/* keep connections alive */
#define	SO_DONTROUTE	0x0010		/* just use interface addresses */
#define	SO_BROADCAST	0x0020		/* permit sending of broadcast msgs */
#if __BSD_VISIBLE
#define	SO_USELOOPBACK	0x0040		/* bypass hardware when possible */
#endif
#define	SO_LINGER	0x0080		/* linger on close if data present */
#define	SO_OOBINLINE	0x0100		/* leave received OOB data in line */
#if __BSD_VISIBLE
#define	SO_REUSEPORT	0x0200		/* allow local address & port reuse */
#define	SO_TIMESTAMP	0x0400		/* timestamp received dgram traffic */
#define	SO_NOSIGPIPE	0x0800		/* no SIGPIPE from EPIPE */
#define	SO_ACCEPTFILTER	0x1000		/* there is an accept filter */
#define	SO_BINTIME	0x2000		/* timestamp received dgram traffic */
#endif
#define	SO_NO_OFFLOAD	0x4000		/* socket cannot be offloaded */
#define	SO_NO_DDP	0x8000		/* disable direct data placement */

/*
 * Additional options, not kept in so_options.
 */
#define	SO_SNDBUF	0x1001		/* send buffer size */
#define	SO_RCVBUF	0x1002		/* receive buffer size */
#define	SO_SNDLOWAT	0x1003		/* send low-water mark */
#define	SO_RCVLOWAT	0x1004		/* receive low-water mark */
#define	SO_SNDTIMEO	0x1005		/* send timeout */
#define	SO_RCVTIMEO	0x1006		/* receive timeout */
#define	SO_ERROR	0x1007		/* get error status and clear */
#define	SO_TYPE		0x1008		/* get socket type */
#if __BSD_VISIBLE
#define	SO_LABEL	0x1009		/* socket's MAC label */
#define	SO_PEERLABEL	0x1010		/* socket's peer's MAC label */
#define	SO_LISTENQLIMIT	0x1011		/* socket's backlog limit */
#define	SO_LISTENQLEN	0x1012		/* socket's complete queue length */
#define	SO_LISTENINCQLEN	0x1013	/* socket's incomplete queue length */
#define	SO_SETFIB	0x1014		/* use this FIB to route */
#define	SO_USER_COOKIE	0x1015		/* user cookie (dummynet etc.) */
#endif

/*
 * Structure used for manipulating linger option.
 */
struct linger {
	int	l_onoff;		/* option on/off */
	int	l_linger;		/* linger time */
};

#if __BSD_VISIBLE
struct accept_filter_arg {
	char	af_name[16];
	char	af_arg[256-16];
};
#endif

/*
 * Level number for (get/set)sockopt() to apply to socket itself.
 */
#define	SOL_SOCKET	0xffff		/* options for socket level */

/*
 * Address families.
 */
#define	AF_UNSPEC	0		/* unspecified */
#if __BSD_VISIBLE
#define	AF_LOCAL	AF_UNIX		/* local to host (pipes, portals) */
#endif
#define	AF_UNIX		1		/* standardized name for AF_LOCAL */
#define	AF_INET		2		/* internetwork: UDP, TCP, etc. */
#if __BSD_VISIBLE
#define	AF_IMPLINK	3		/* arpanet imp addresses */
#define	AF_PUP		4		/* pup protocols: e.g. BSP */
#define	AF_CHAOS	5		/* mit CHAOS protocols */
#define	AF_NETBIOS	6		/* SMB protocols */
#define	AF_ISO		7		/* ISO protocols */
#define	AF_OSI		AF_ISO
#define	AF_ECMA		8		/* European computer manufacturers */
#define	AF_DATAKIT	9		/* datakit protocols */
#define	AF_CCITT	10		/* CCITT protocols, X.25 etc */
#define	AF_SNA		11		/* IBM SNA */
#define AF_DECnet	12		/* DECnet */
#define AF_DLI		13		/* DEC Direct data link interface */
#define AF_LAT		14		/* LAT */
#define	AF_HYLINK	15		/* NSC Hyperchannel */
#define	AF_APPLETALK	16		/* Apple Talk */
#define	AF_ROUTE	17		/* Internal Routing Protocol */
#define	AF_LINK		18		/* Link layer interface */
#define	pseudo_AF_XTP	19		/* eXpress Transfer Protocol (no AF) */
#define	AF_COIP		20		/* connection-oriented IP, aka ST II */
#define	AF_CNT		21		/* Computer Network Technology */
#define pseudo_AF_RTIP	22		/* Help Identify RTIP packets */
#define	AF_IPX		23		/* Novell Internet Protocol */
#define	AF_SIP		24		/* Simple Internet Protocol */
#define	pseudo_AF_PIP	25		/* Help Identify PIP packets */
#define	AF_ISDN		26		/* Integrated Services Digital Network*/
#define	AF_E164		AF_ISDN		/* CCITT E.164 recommendation */
#define	pseudo_AF_KEY	27		/* Internal key-management function */
#endif
#define	AF_INET6	28		/* IPv6 */
#if __BSD_VISIBLE
#define	AF_NATM		29		/* native ATM access */
#define	AF_ATM		30		/* ATM */
#define pseudo_AF_HDRCMPLT 31		/* Used by BPF to not rewrite headers
					 * in interface output routine
					 */
#define	AF_NETGRAPH	32		/* Netgraph sockets */
#define	AF_SLOW		33		/* 802.3ad slow protocol */
#define	AF_SCLUSTER	34		/* Sitara cluster protocol */
#define	AF_ARP		35
#define	AF_BLUETOOTH	36		/* Bluetooth sockets */
#define	AF_IEEE80211	37		/* IEEE 802.11 protocol */
#define	AF_MAX		38
/*
 * When allocating a new AF_ constant, please only allocate
 * even numbered constants for FreeBSD until 134 as odd numbered AF_
 * constants 39-133 are now reserved for vendors.
 */
#define AF_VENDOR00 39
#define AF_VENDOR01 41
#define AF_VENDOR02 43
#define AF_VENDOR03 45
#define AF_VENDOR04 47
#define AF_VENDOR05 49
#define AF_VENDOR06 51
#define AF_VENDOR07 53
#define AF_VENDOR08 55
#define AF_VENDOR09 57
#define AF_VENDOR10 59
#define AF_VENDOR11 61
#define AF_VENDOR12 63
#define AF_VENDOR13 65
#define AF_VENDOR14 67
#define AF_VENDOR15 69
#define AF_VENDOR16 71
#define AF_VENDOR17 73
#define AF_VENDOR18 75
#define AF_VENDOR19 77
#define AF_VENDOR20 79
#define AF_VENDOR21 81
#define AF_VENDOR22 83
#define AF_VENDOR23 85
#define AF_VENDOR24 87
#define AF_VENDOR25 89
#define AF_VENDOR26 91
#define AF_VENDOR27 93
#define AF_VENDOR28 95
#define AF_VENDOR29 97
#define AF_VENDOR30 99
#define AF_VENDOR31 101
#define AF_VENDOR32 103
#define AF_VENDOR33 105
#define AF_VENDOR34 107
#define AF_VENDOR35 109
#define AF_VENDOR36 111
#define AF_VENDOR37 113
#define AF_VENDOR38 115
#define AF_VENDOR39 117
#define AF_VENDOR40 119
#define AF_VENDOR41 121
#define AF_VENDOR42 123
#define AF_VENDOR43 125
#define AF_VENDOR44 127
#define AF_VENDOR45 129
#define AF_VENDOR46 131
#define AF_VENDOR47 133
#endif

/*
 * Structure used by kernel to store most
 * addresses.
 */
struct sockaddr {
	unsigned char	sa_len;		/* total length */
	sa_family_t	sa_family;	/* address family */
	char		sa_data[14];	/* actually longer; address value */
};
#if __BSD_VISIBLE
#define	SOCK_MAXADDRLEN	255		/* longest possible addresses */

/*
 * Structure used by kernel to pass protocol
 * information in raw sockets.
 */
struct sockproto {
	unsigned short	sp_family;		/* address family */
	unsigned short	sp_protocol;		/* protocol */
};
#endif

#include <sys/_sockaddr_storage.h>

#if __BSD_VISIBLE
/*
 * Protocol families, same as address families for now.
 */
#define	PF_UNSPEC	AF_UNSPEC
#define	PF_LOCAL	AF_LOCAL
#define	PF_UNIX		PF_LOCAL	/* backward compatibility */
#define	PF_INET		AF_INET
#define	PF_IMPLINK	AF_IMPLINK
#define	PF_PUP		AF_PUP
#define	PF_CHAOS	AF_CHAOS
#define	PF_NETBIOS	AF_NETBIOS
#define	PF_ISO		AF_ISO
#define	PF_OSI		AF_ISO
#define	PF_ECMA		AF_ECMA
#define	PF_DATAKIT	AF_DATAKIT
#define	PF_CCITT	AF_CCITT
#define	PF_SNA		AF_SNA
#define PF_DECnet	AF_DECnet
#define PF_DLI		AF_DLI
#define PF_LAT		AF_LAT
#define	PF_HYLINK	AF_HYLINK
#define	PF_APPLETALK	AF_APPLETALK
#define	PF_ROUTE	AF_ROUTE
#define	PF_LINK		AF_LINK
#define	PF_XTP		pseudo_AF_XTP	/* really just proto family, no AF */
#define	PF_COIP		AF_COIP
#define	PF_CNT		AF_CNT
#define	PF_SIP		AF_SIP
#define	PF_IPX		AF_IPX
#define PF_RTIP		pseudo_AF_RTIP	/* same format as AF_INET */
#define PF_PIP		pseudo_AF_PIP
#define	PF_ISDN		AF_ISDN
#define	PF_KEY		pseudo_AF_KEY
#define	PF_INET6	AF_INET6
#define	PF_NATM		AF_NATM
#define	PF_ATM		AF_ATM
#define	PF_NETGRAPH	AF_NETGRAPH
#define	PF_SLOW		AF_SLOW
#define PF_SCLUSTER	AF_SCLUSTER
#define	PF_ARP		AF_ARP
#define	PF_BLUETOOTH	AF_BLUETOOTH

#define	PF_MAX		AF_MAX

/*
 * Definitions for network related sysctl, CTL_NET.
 *
 * Second level is protocol family.
 * Third level is protocol number.
 *
 * Further levels are defined by the individual families below.
 */
#define NET_MAXID	AF_MAX

#define CTL_NET_NAMES { \
	{ 0, 0 }, \
	{ "unix", CTLTYPE_NODE }, \
	{ "inet", CTLTYPE_NODE }, \
	{ "implink", CTLTYPE_NODE }, \
	{ "pup", CTLTYPE_NODE }, \
	{ "chaos", CTLTYPE_NODE }, \
	{ "xerox_ns", CTLTYPE_NODE }, \
	{ "iso", CTLTYPE_NODE }, \
	{ "emca", CTLTYPE_NODE }, \
	{ "datakit", CTLTYPE_NODE }, \
	{ "ccitt", CTLTYPE_NODE }, \
	{ "ibm_sna", CTLTYPE_NODE }, \
	{ "decnet", CTLTYPE_NODE }, \
	{ "dec_dli", CTLTYPE_NODE }, \
	{ "lat", CTLTYPE_NODE }, \
	{ "hylink", CTLTYPE_NODE }, \
	{ "appletalk", CTLTYPE_NODE }, \
	{ "route", CTLTYPE_NODE }, \
	{ "link_layer", CTLTYPE_NODE }, \
	{ "xtp", CTLTYPE_NODE }, \
	{ "coip", CTLTYPE_NODE }, \
	{ "cnt", CTLTYPE_NODE }, \
	{ "rtip", CTLTYPE_NODE }, \
	{ "ipx", CTLTYPE_NODE }, \
	{ "sip", CTLTYPE_NODE }, \
	{ "pip", CTLTYPE_NODE }, \
	{ "isdn", CTLTYPE_NODE }, \
	{ "key", CTLTYPE_NODE }, \
	{ "inet6", CTLTYPE_NODE }, \
	{ "natm", CTLTYPE_NODE }, \
	{ "atm", CTLTYPE_NODE }, \
	{ "hdrcomplete", CTLTYPE_NODE }, \
	{ "netgraph", CTLTYPE_NODE }, \
	{ "snp", CTLTYPE_NODE }, \
	{ "scp", CTLTYPE_NODE }, \
}

/*
 * PF_ROUTE - Routing table
 *
 * Three additional levels are defined:
 *	Fourth: address family, 0 is wildcard
 *	Fifth: type of info, defined below
 *	Sixth: flag(s) to mask with for NET_RT_FLAGS
 */
#define NET_RT_DUMP	1		/* dump; may limit to a.f. */
#define NET_RT_FLAGS	2		/* by flags, e.g. RESOLVING */
#define NET_RT_IFLIST	3		/* survey interface list */
#define	NET_RT_IFMALIST	4		/* return multicast address list */
#define	NET_RT_MAXID	5

#define CTL_NET_RT_NAMES { \
	{ 0, 0 }, \
	{ "dump", CTLTYPE_STRUCT }, \
	{ "flags", CTLTYPE_STRUCT }, \
	{ "iflist", CTLTYPE_STRUCT }, \
	{ "ifmalist", CTLTYPE_STRUCT }, \
}
#endif /* __BSD_VISIBLE */

/*
 * Maximum queue length specifiable by listen.
 */
#define	SOMAXCONN	128

/*
 * Message header for recvmsg and sendmsg calls.
 * Used value-result for recvmsg, value only for sendmsg.
 */
struct msghdr {
	void		*msg_name;		/* optional address */
	socklen_t	 msg_namelen;		/* size of address */
	struct iovec	*msg_iov;		/* scatter/gather array */
	int		 msg_iovlen;		/* # elements in msg_iov */
	void		*msg_control;		/* ancillary data, see below */
	socklen_t	 msg_controllen;	/* ancillary data buffer len */
	int		 msg_flags;		/* flags on received message */
};

#define	MSG_OOB		0x1		/* process out-of-band data */
#define	MSG_PEEK	0x2		/* peek at incoming message */
#define	MSG_DONTROUTE	0x4		/* send without using routing tables */
#define	MSG_EOR		0x8		/* data completes record */
#define	MSG_TRUNC	0x10		/* data discarded before delivery */
#define	MSG_CTRUNC	0x20		/* control data lost before delivery */
#define	MSG_WAITALL	0x40		/* wait for full request or error */
#define MSG_NOTIFICATION 0x2000         /* SCTP notification */
#if __BSD_VISIBLE
#define	MSG_DONTWAIT	0x80		/* this message should be nonblocking */
#define	MSG_EOF		0x100		/* data completes connection */
#define	MSG_NBIO	0x4000		/* FIONBIO mode, used by fifofs */
#define	MSG_COMPAT      0x8000		/* used in sendit() */
#endif
#ifdef _KERNEL
#define	MSG_SOCALLBCK   0x10000		/* for use by socket callbacks - soreceive (TCP) */
#endif
#if __BSD_VISIBLE
#define	MSG_NOSIGNAL	0x20000		/* do not generate SIGPIPE on EOF */
#endif

/*
 * Header for ancillary data objects in msg_control buffer.
 * Used for additional information with/about a datagram
 * not expressible by flags.  The format is a sequence
 * of message elements headed by cmsghdr structures.
 */
struct cmsghdr {
	socklen_t	cmsg_len;		/* data byte count, including hdr */
	int		cmsg_level;		/* originating protocol */
	int		cmsg_type;		/* protocol-specific type */
/* followed by	u_char  cmsg_data[]; */
};

#if __BSD_VISIBLE
/*
 * While we may have more groups than this, the cmsgcred struct must
 * be able to fit in an mbuf and we have historically supported a
 * maximum of 16 groups.
*/
#define CMGROUP_MAX 16

/*
 * Credentials structure, used to verify the identity of a peer
 * process that has sent us a message. This is allocated by the
 * peer process but filled in by the kernel. This prevents the
 * peer from lying about its identity. (Note that cmcred_groups[0]
 * is the effective GID.)
 */
struct cmsgcred {
	pid_t	cmcred_pid;		/* PID of sending process */
	uid_t	cmcred_uid;		/* real UID of sending process */
	uid_t	cmcred_euid;		/* effective UID of sending process */
	gid_t	cmcred_gid;		/* real GID of sending process */
	short	cmcred_ngroups;		/* number or groups */
	gid_t	cmcred_groups[CMGROUP_MAX];	/* groups */
};

/*
 * Socket credentials.
 */
struct sockcred {
	uid_t	sc_uid;			/* real user id */
	uid_t	sc_euid;		/* effective user id */
	gid_t	sc_gid;			/* real group id */
	gid_t	sc_egid;		/* effective group id */
	int	sc_ngroups;		/* number of supplemental groups */
	gid_t	sc_groups[1];		/* variable length */
};

/*
 * Compute size of a sockcred structure with groups.
 */
#define	SOCKCREDSIZE(ngrps) \
	(sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))

#endif /* __BSD_VISIBLE */

/* given pointer to struct cmsghdr, return pointer to data */
#define	CMSG_DATA(cmsg)		((unsigned char *)(cmsg) + \
				 _ALIGN(sizeof(struct cmsghdr)))

/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
#define	CMSG_NXTHDR(mhdr, cmsg)	\
	((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \
	    ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
	  _ALIGN(sizeof(struct cmsghdr)) > \
	    (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
	    (struct cmsghdr *)0 : \
	    (struct cmsghdr *)(void *)((char *)(cmsg) + \
	    _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))

/*
 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
 * an empty list for some reasons.
 */
#define	CMSG_FIRSTHDR(mhdr) \
	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
	 (struct cmsghdr *)(mhdr)->msg_control : \
	 (struct cmsghdr *)NULL)

#if __BSD_VISIBLE
/* RFC 2292 additions */
#define	CMSG_SPACE(l)		(_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
#define	CMSG_LEN(l)		(_ALIGN(sizeof(struct cmsghdr)) + (l))
#endif

#ifdef _KERNEL
#define	CMSG_ALIGN(n)	_ALIGN(n)
#endif

/* "Socket"-level control message types: */
#define	SCM_RIGHTS	0x01		/* access rights (array of int) */
#if __BSD_VISIBLE
#define	SCM_TIMESTAMP	0x02		/* timestamp (struct timeval) */
#define	SCM_CREDS	0x03		/* process creds (struct cmsgcred) */
#define	SCM_BINTIME	0x04		/* timestamp (struct bintime) */
#endif

#if __BSD_VISIBLE
/*
 * 4.3 compat sockaddr, move to compat file later
 */
struct osockaddr {
	unsigned short sa_family;	/* address family */
	char	sa_data[14];		/* up to 14 bytes of direct address */
};

/*
 * 4.3-compat message header (move to compat file later).
 */
struct omsghdr {
	char	*msg_name;		/* optional address */
	int	msg_namelen;		/* size of address */
	struct	iovec *msg_iov;		/* scatter/gather array */
	int	msg_iovlen;		/* # elements in msg_iov */
	char	*msg_accrights;		/* access rights sent/received */
	int	msg_accrightslen;
};
#endif

/*
 * howto arguments for shutdown(2), specified by Posix.1g.
 */
#define	SHUT_RD		0		/* shut down the reading side */
#define	SHUT_WR		1		/* shut down the writing side */
#define	SHUT_RDWR	2		/* shut down both sides */

/* we cheat and use the SHUT_XX defines for these */
#define PRU_FLUSH_RD     SHUT_RD
#define PRU_FLUSH_WR     SHUT_WR
#define PRU_FLUSH_RDWR   SHUT_RDWR

#if __BSD_VISIBLE
/*
 * sendfile(2) header/trailer struct
 */
struct sf_hdtr {
	struct iovec *headers;	/* pointer to an array of header struct iovec's */
	int hdr_cnt;		/* number of header iovec's */
	struct iovec *trailers;	/* pointer to an array of trailer struct iovec's */
	int trl_cnt;		/* number of trailer iovec's */
};

/*
 * Sendfile-specific flag(s)
 */
#define	SF_NODISKIO     0x00000001
#define	SF_MNOWAIT	0x00000002
#define	SF_SYNC		0x00000004
#endif

#ifndef	_KERNEL

#include <sys/cdefs.h>

__BEGIN_DECLS
int	accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
int	bind(int, const struct sockaddr *, socklen_t);
int	connect(int, const struct sockaddr *, socklen_t);
int	getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
int	getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
int	getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
int	listen(int, int);
ssize_t	recv(int, void *, size_t, int);
ssize_t	recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
ssize_t	recvmsg(int, struct msghdr *, int);
ssize_t	send(int, const void *, size_t, int);
ssize_t	sendto(int, const void *,
	    size_t, int, const struct sockaddr *, socklen_t);
ssize_t	sendmsg(int, const struct msghdr *, int);
#if __BSD_VISIBLE
int	sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
int	setfib(int);
#endif
int	setsockopt(int, int, int, const void *, socklen_t);
int	shutdown(int, int);
int	sockatmark(int);
int	socket(int, int, int);
int	socketpair(int, int, int, int *);
__END_DECLS

#endif /* !_KERNEL */

#ifdef _KERNEL
struct socket;

struct tcpcb *so_sototcpcb(struct socket *so);
struct inpcb *so_sotoinpcb(struct socket *so);
struct sockbuf *so_sockbuf_snd(struct socket *);
struct sockbuf *so_sockbuf_rcv(struct socket *);

int so_state_get(const struct socket *);
void so_state_set(struct socket *, int);

int so_options_get(const struct socket *);
void so_options_set(struct socket *, int);

int so_error_get(const struct socket *);
void so_error_set(struct socket *, int);

int so_linger_get(const struct socket *);
void so_linger_set(struct socket *, int);

struct protosw *so_protosw_get(const struct socket *);
void so_protosw_set(struct socket *, struct protosw *);

void so_sorwakeup_locked(struct socket *so);
void so_sowwakeup_locked(struct socket *so);

void so_sorwakeup(struct socket *so);
void so_sowwakeup(struct socket *so);

void so_lock(struct socket *so);
void so_unlock(struct socket *so);

void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg);

#endif

#endif /* !_SYS_SOCKET_H_ */


code:
/*-
 * Copyright (c) 1982, 1986, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)socketvar.h	8.3 (Berkeley) 2/19/95
 *
 * $FreeBSD: release/9.0.0/sys/sys/socketvar.h 215178 2010-11-12 13:02:26Z luigi $
 */

#ifndef _SYS_SOCKETVAR_H_
#define _SYS_SOCKETVAR_H_

#include <sys/queue.h>			/* for TAILQ macros */
#include <sys/selinfo.h>		/* for struct selinfo */
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <sys/_sx.h>
#include <sys/sockbuf.h>
#include <sys/sockstate.h>
#ifdef _KERNEL
#include <sys/sockopt.h>
#endif

struct vnet;

/*
 * Kernel structure per socket.
 * Contains send and receive buffer queues,
 * handle on protocol and pointer to protocol
 * private data and error information.
 */
typedef	u_quad_t so_gen_t;

struct socket;

/*-
 * Locking key to struct socket:
 * (a) constant after allocation, no locking required.
 * (b) locked by SOCK_LOCK(so).
 * (c) locked by SOCKBUF_LOCK(&so->so_rcv).
 * (d) locked by SOCKBUF_LOCK(&so->so_snd).
 * (e) locked by ACCEPT_LOCK().
 * (f) not locked since integer reads/writes are atomic.
 * (g) used only as a sleep/wakeup address, no value.
 * (h) locked by global mutex so_global_mtx.
 */
struct socket {
	int	so_count;		/* (b) reference count */
	short	so_type;		/* (a) generic type, see socket.h */
	char unk6[0x2];
	short	so_options;		/* from socket call, see socket.h */
	short	so_linger;		/* time to linger while closing */
	short	so_state;		/* (b) internal state flags SS_* */
	int	so_qstate;		/* (e) internal state flags SQ_* */
	void	*so_pcb;		/* protocol control block */
	struct	vnet *so_vnet;		/* network stack instance */
	struct	protosw *so_proto;	/* (a) protocol handle */
/*
 * Variables for connection queuing.
 * Socket where accepts occur is so_head in all subsidiary sockets.
 * If so_head is 0, socket is not related to an accept.
 * For head socket so_incomp queues partially completed connections,
 * while so_comp is a queue of connections ready to be accepted.
 * If a connection is aborted and it has so_head set, then
 * it has to be pulled out of either so_incomp or so_comp.
 * We allow connections to queue up based on current queue lengths
 * and limit on number of queued connections for this socket.
 */
	struct	socket *so_head;	/* (e) back pointer to listen socket */
	TAILQ_HEAD(, socket) so_incomp;	/* (e) queue of partial unaccepted connections */
	TAILQ_HEAD(, socket) so_comp;	/* (e) queue of complete unaccepted connections */
	TAILQ_ENTRY(socket) so_list;	/* (e) list of unaccepted connections */
	u_short	so_qlen;		/* (e) number of unaccepted connections */
	u_short	so_incqlen;		/* (e) number of unaccepted incomplete
					   connections */
	u_short	so_qlimit;		/* (e) max number queued connections */
	short	so_timeo;		/* (g) connection timeout */
	u_short	so_error;		/* (f) error affecting connection */
	struct	sigio *so_sigio;	/* [sg] information for async I/O or
					   out of band data (SIGURG) */
	u_long	so_oobmark;		/* (c) chars to oob mark */
	TAILQ_HEAD(, aiocblist) so_aiojobq; /* AIO ops waiting on socket */

	struct sockbuf so_rcv, so_snd;

	struct	ucred *so_cred;		/* (a) user credentials */
	struct	label *so_label;	/* (b) MAC label for socket */
	struct	label *so_peerlabel;	/* (b) cached MAC label for peer */
	/* NB: generation count must not be first. */
	so_gen_t so_gencnt;		/* (h) generation count */
	void	*so_emuldata;		/* (b) private data for emulators */
 	struct so_accf {
		struct	accept_filter *so_accept_filter;
		void	*so_accept_filter_arg;	/* saved filter args */
		char	*so_accept_filter_str;	/* saved user args */
	} *so_accf;
	/*
	 * so_fibnum, so_user_cookie and friends can be used to attach
	 * some user-specified metadata to a socket, which then can be
	 * used by the kernel for various actions.
	 * so_user_cookie is used by ipfw/dummynet.
	 */
	int so_fibnum;		/* routing domain for this socket */
	uint32_t so_user_cookie;

	// PlayStation 4 Specific (creds: ChendoChap)
	char unk2C0[0x110];

#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_150
    char unk3D0[0x8];
#endif

#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_170
    char unk3D8[0x10];
#endif

#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_250
    char unk3E8[0x10];
#endif

#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_350
    char unk0x3F8[0x20];
#endif

#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_600
    char unk0x3F8[0x60];
#endif
};
#if MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_600
static_assert(sizeof(struct socket) == 0x478, "invalid struct socket size");
#elif MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_350
static_assert(sizeof(struct socket) == 0x418, "invalid struct socket size");
#elif MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_250
static_assert(sizeof(struct socket) == 0x3F8, "invalid struct socket size");
#elif MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_170
static_assert(sizeof(struct socket) == 0x3E8, "invalid struct socket size");
#elif MIRA_PLATFORM >= MIRA_PLATFORM_ORBIS_BSD_150
static_assert(sizeof(struct socket) == 0x3D8, "invalid struct socket size");
#else
static_assert(sizeof(struct socket) == 0x3D0, "invalid struct socket size");
#endif

/*
 * Global accept mutex to serialize access to accept queues and
 * fields associated with multiple sockets.  This allows us to
 * avoid defining a lock order between listen and accept sockets
 * until such time as it proves to be a good idea.
 */
extern struct mtx accept_mtx;
#define	ACCEPT_LOCK_ASSERT()		mtx_assert(&accept_mtx, MA_OWNED)
#define	ACCEPT_UNLOCK_ASSERT()		mtx_assert(&accept_mtx, MA_NOTOWNED)
#define	ACCEPT_LOCK()			mtx_lock(&accept_mtx)
#define	ACCEPT_UNLOCK()			mtx_unlock(&accept_mtx)

/*
 * Per-socket mutex: we reuse the receive socket buffer mutex for space
 * efficiency.  This decision should probably be revisited as we optimize
 * locking for the socket code.
 */
#define	SOCK_MTX(_so)			SOCKBUF_MTX(&(_so)->so_rcv)
#define	SOCK_LOCK(_so)			SOCKBUF_LOCK(&(_so)->so_rcv)
#define	SOCK_OWNED(_so)			SOCKBUF_OWNED(&(_so)->so_rcv)
#define	SOCK_UNLOCK(_so)		SOCKBUF_UNLOCK(&(_so)->so_rcv)
#define	SOCK_LOCK_ASSERT(_so)		SOCKBUF_LOCK_ASSERT(&(_so)->so_rcv)

/*
 * Socket state bits stored in so_qstate.
 */
#define	SQ_INCOMP		0x0800	/* unaccepted, incomplete connection */
#define	SQ_COMP			0x1000	/* unaccepted, complete connection */

/*
 * Externalized form of struct socket used by the sysctl(3) interface.
 */
struct xsocket {
	size_t	xso_len;	/* length of this structure */
	struct	socket *xso_so;	/* makes a convenient handle sometimes */
	short	so_type;
	short	so_options;
	short	so_linger;
	short	so_state;
	caddr_t	so_pcb;		/* another convenient handle */
	int	xso_protocol;
	int	xso_family;
	u_short	so_qlen;
	u_short	so_incqlen;
	u_short	so_qlimit;
	short	so_timeo;
	u_short	so_error;
	pid_t	so_pgid;
	u_long	so_oobmark;
	struct xsockbuf so_rcv, so_snd;
	uid_t	so_uid;		/* XXX */
};

#ifdef _KERNEL

/*
 * Macros for sockets and socket buffering.
 */

/*
 * Flags to sblock().
 */
#define	SBL_WAIT	0x00000001	/* Wait if not immediately available. */
#define	SBL_NOINTR	0x00000002	/* Force non-interruptible sleep. */
#define	SBL_VALID	(SBL_WAIT | SBL_NOINTR)

/*
 * Do we need to notify the other side when I/O is possible?
 */
#define	sb_notify(sb)	(((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \
    SB_UPCALL | SB_AIO | SB_KNOTE)) != 0)

/* do we have to send all at once on a socket? */
#define	sosendallatonce(so) \
    ((so)->so_proto->pr_flags & PR_ATOMIC)

/* can we read something from so? */
#define	soreadabledata(so) \
    ((so)->so_rcv.sb_cc >= (so)->so_rcv.sb_lowat || \
	!TAILQ_EMPTY(&(so)->so_comp) || (so)->so_error)
#define	soreadable(so) \
	(soreadabledata(so) || ((so)->so_rcv.sb_state & SBS_CANTRCVMORE))

/* can we write something to so? */
#define	sowriteable(so) \
    ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \
	(((so)->so_state&SS_ISCONNECTED) || \
	  ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \
     ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \
     (so)->so_error)

/*
 * soref()/sorele() ref-count the socket structure.  Note that you must
 * still explicitly close the socket, but the last ref count will free
 * the structure.
 */
#define	soref(so) do {							\
	SOCK_LOCK_ASSERT(so);						\
	++(so)->so_count;						\
} while (0)

#define	sorele(so) do {							\
	ACCEPT_LOCK_ASSERT();						\
	SOCK_LOCK_ASSERT(so);						\
	if ((so)->so_count <= 0)					\
		panic("sorele");					\
	if (--(so)->so_count == 0)					\
		sofree(so);						\
	else {								\
		SOCK_UNLOCK(so);					\
		ACCEPT_UNLOCK();					\
	}								\
} while (0)

/*
 * In sorwakeup() and sowwakeup(), acquire the socket buffer lock to
 * avoid a non-atomic test-and-wakeup.  However, sowakeup is
 * responsible for releasing the lock if it is called.  We unlock only
 * if we don't call into sowakeup.  If any code is introduced that
 * directly invokes the underlying sowakeup() primitives, it must
 * maintain the same semantics.
 */
#define	sorwakeup_locked(so) do {					\
	SOCKBUF_LOCK_ASSERT(&(so)->so_rcv);				\
	if (sb_notify(&(so)->so_rcv))					\
		sowakeup((so), &(so)->so_rcv);	 			\
	else								\
		SOCKBUF_UNLOCK(&(so)->so_rcv);				\
} while (0)

#define	sorwakeup(so) do {						\
	SOCKBUF_LOCK(&(so)->so_rcv);					\
	sorwakeup_locked(so);						\
} while (0)

#define	sowwakeup_locked(so) do {					\
	SOCKBUF_LOCK_ASSERT(&(so)->so_snd);				\
	if (sb_notify(&(so)->so_snd))					\
		sowakeup((so), &(so)->so_snd); 				\
	else								\
		SOCKBUF_UNLOCK(&(so)->so_snd);				\
} while (0)

#define	sowwakeup(so) do {						\
	SOCKBUF_LOCK(&(so)->so_snd);					\
	sowwakeup_locked(so);						\
} while (0)

struct accept_filter {
	char	accf_name[16];
	int	(*accf_callback)
		(struct socket *so, void *arg, int waitflag);
	void *	(*accf_create)
		(struct socket *so, char *arg);
	void	(*accf_destroy)
		(struct socket *so);
	SLIST_ENTRY(accept_filter) accf_next;
};

#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_ACCF);
MALLOC_DECLARE(M_PCB);
MALLOC_DECLARE(M_SONAME);
#endif

extern int	maxsockets;
extern u_long	sb_max;
extern struct uma_zone *socket_zone;
extern so_gen_t so_gencnt;

struct mbuf;
struct sockaddr;
struct ucred;
struct uio;

/* 'which' values for socket upcalls. */
#define	SO_RCV		1
#define	SO_SND		2

/* Return values for socket upcalls. */
#define	SU_OK		0
#define	SU_ISCONNECTED	1

/*
 * From uipc_socket and friends
 */
int	sockargs(struct mbuf **mp, caddr_t buf, int buflen, int type);
int	getsockaddr(struct sockaddr **namp, caddr_t uaddr, size_t len);
void	soabort(struct socket *so);
int	soaccept(struct socket *so, struct sockaddr **nam);
int	socheckuid(struct socket *so, uid_t uid);
int	sobind(struct socket *so, struct sockaddr *nam, struct thread *td);
int	soclose(struct socket *so);
int	soconnect(struct socket *so, struct sockaddr *nam, struct thread *td);
int	soconnect2(struct socket *so1, struct socket *so2);
int	socow_setup(struct mbuf *m0, struct uio *uio);
int	socreate(int dom, struct socket **aso, int type, int proto,
	    struct ucred *cred, struct thread *td);
int	sodisconnect(struct socket *so);
struct	sockaddr *sodupsockaddr(const struct sockaddr *sa, int mflags);
void	sofree(struct socket *so);
void	sohasoutofband(struct socket *so);
int	solisten(struct socket *so, int backlog, struct thread *td);
void	solisten_proto(struct socket *so, int backlog);
int	solisten_proto_check(struct socket *so);
struct socket *
	sonewconn(struct socket *head, int connstatus);

int	sopoll(struct socket *so, int events, struct ucred *active_cred,
	    struct thread *td);
int	sopoll_generic(struct socket *so, int events,
	    struct ucred *active_cred, struct thread *td);
int	soreceive(struct socket *so, struct sockaddr **paddr, struct uio *uio,
	    struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
int	soreceive_stream(struct socket *so, struct sockaddr **paddr,
	    struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
	    int *flagsp);
int	soreceive_dgram(struct socket *so, struct sockaddr **paddr,
	    struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
	    int *flagsp);
int	soreceive_generic(struct socket *so, struct sockaddr **paddr,
	    struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
	    int *flagsp);
int	soreserve(struct socket *so, u_long sndcc, u_long rcvcc);
void	sorflush(struct socket *so);
int	sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
	    struct mbuf *top, struct mbuf *control, int flags,
	    struct thread *td);
int	sosend_dgram(struct socket *so, struct sockaddr *addr,
	    struct uio *uio, struct mbuf *top, struct mbuf *control,
	    int flags, struct thread *td);
int	sosend_generic(struct socket *so, struct sockaddr *addr,
	    struct uio *uio, struct mbuf *top, struct mbuf *control,
	    int flags, struct thread *td);
int	soshutdown(struct socket *so, int how);
void	sotoxsocket(struct socket *so, struct xsocket *xso);
void	soupcall_clear(struct socket *so, int which);
void	soupcall_set(struct socket *so, int which,
	    int (*func)(struct socket *, void *, int), void *arg);
void	sowakeup(struct socket *so, struct sockbuf *sb);
int	selsocket(struct socket *so, int events, struct timeval *tv,
	    struct thread *td);

/*
 * Accept filter functions (duh).
 */
int	accept_filt_add(struct accept_filter *filt);
int	accept_filt_del(char *name);
struct	accept_filter *accept_filt_get(char *name);
#ifdef ACCEPT_FILTER_MOD
#ifdef SYSCTL_DECL
SYSCTL_DECL(_net_inet_accf);
#endif
int	accept_filt_generic_mod_event(module_t mod, int event, void *data);
#endif

#endif /* _KERNEL */

#endif /* !_SYS_SOCKETVAR_H_ */

repo_name: veiledmerc/mira

license: mit


code:
/*-
 * Copyright (c) 1982, 1986, 1990, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)sockio.h	8.1 (Berkeley) 3/28/94
 * $FreeBSD: release/9.0.0/sys/sys/sockio.h 223735 2011-07-03 12:22:02Z bz $
 */

#ifndef _SYS_SOCKIO_H_
#define	_SYS_SOCKIO_H_

#include <sys/ioccom.h>

/* Socket ioctl's. */
#define	SIOCSHIWAT	 _IOW('s',  0, int)		/* set high watermark */
#define	SIOCGHIWAT	 _IOR('s',  1, int)		/* get high watermark */
#define	SIOCSLOWAT	 _IOW('s',  2, int)		/* set low watermark */
#define	SIOCGLOWAT	 _IOR('s',  3, int)		/* get low watermark */
#define	SIOCATMARK	 _IOR('s',  7, int)		/* at oob mark? */
#define	SIOCSPGRP	 _IOW('s',  8, int)		/* set process group */
#define	SIOCGPGRP	 _IOR('s',  9, int)		/* get process group */

#define	SIOCADDRT	 _IOW('r', 10, struct ortentry)	/* add route */
#define	SIOCDELRT	 _IOW('r', 11, struct ortentry)	/* delete route */
#define	SIOCGETVIFCNT	_IOWR('r', 15, struct sioc_vif_req)/* get vif pkt cnt */
#define	SIOCGETSGCNT	_IOWR('r', 16, struct sioc_sg_req) /* get s,g pkt cnt */

#define	SIOCSIFADDR	 _IOW('i', 12, struct ifreq)	/* set ifnet address */
#define	OSIOCGIFADDR	_IOWR('i', 13, struct ifreq)	/* get ifnet address */
#define	SIOCGIFADDR	_IOWR('i', 33, struct ifreq)	/* get ifnet address */
#define	SIOCSIFDSTADDR	 _IOW('i', 14, struct ifreq)	/* set p-p address */
#define	OSIOCGIFDSTADDR	_IOWR('i', 15, struct ifreq)	/* get p-p address */
#define	SIOCGIFDSTADDR	_IOWR('i', 34, struct ifreq)	/* get p-p address */
#define	SIOCSIFFLAGS	 _IOW('i', 16, struct ifreq)	/* set ifnet flags */
#define	SIOCGIFFLAGS	_IOWR('i', 17, struct ifreq)	/* get ifnet flags */
#define	OSIOCGIFBRDADDR	_IOWR('i', 18, struct ifreq)	/* get broadcast addr */
#define	SIOCGIFBRDADDR	_IOWR('i', 35, struct ifreq)	/* get broadcast addr */
#define	SIOCSIFBRDADDR	 _IOW('i', 19, struct ifreq)	/* set broadcast addr */
#define	OSIOCGIFCONF	_IOWR('i', 20, struct ifconf)	/* get ifnet list */
#define	SIOCGIFCONF	_IOWR('i', 36, struct ifconf)	/* get ifnet list */
#define	OSIOCGIFNETMASK	_IOWR('i', 21, struct ifreq)	/* get net addr mask */
#define	SIOCGIFNETMASK	_IOWR('i', 37, struct ifreq)	/* get net addr mask */
#define	SIOCSIFNETMASK	 _IOW('i', 22, struct ifreq)	/* set net addr mask */
#define	SIOCGIFMETRIC	_IOWR('i', 23, struct ifreq)	/* get IF metric */
#define	SIOCSIFMETRIC	 _IOW('i', 24, struct ifreq)	/* set IF metric */
#define	SIOCDIFADDR	 _IOW('i', 25, struct ifreq)	/* delete IF addr */
#define	SIOCAIFADDR	 _IOW('i', 26, struct ifaliasreq)/* add/chg IF alias */

#define	SIOCALIFADDR	 _IOW('i', 27, struct if_laddrreq) /* add IF addr */
#define	SIOCGLIFADDR	_IOWR('i', 28, struct if_laddrreq) /* get IF addr */
#define	SIOCDLIFADDR	 _IOW('i', 29, struct if_laddrreq) /* delete IF addr */
#define	SIOCSIFCAP	 _IOW('i', 30, struct ifreq)	/* set IF features */
#define	SIOCGIFCAP	_IOWR('i', 31, struct ifreq)	/* get IF features */
#define	SIOCGIFINDEX	_IOWR('i', 32, struct ifreq)	/* get IF index */
#define	SIOCGIFMAC	_IOWR('i', 38, struct ifreq)	/* get IF MAC label */
#define	SIOCSIFMAC	 _IOW('i', 39, struct ifreq)	/* set IF MAC label */
#define	SIOCSIFNAME	 _IOW('i', 40, struct ifreq)	/* set IF name */
#define	SIOCSIFDESCR	 _IOW('i', 41, struct ifreq)	/* set ifnet descr */
#define	SIOCGIFDESCR	_IOWR('i', 42, struct ifreq)	/* get ifnet descr */

#define	SIOCADDMULTI	 _IOW('i', 49, struct ifreq)	/* add m'cast addr */
#define	SIOCDELMULTI	 _IOW('i', 50, struct ifreq)	/* del m'cast addr */
#define	SIOCGIFMTU	_IOWR('i', 51, struct ifreq)	/* get IF mtu */
#define	SIOCSIFMTU	 _IOW('i', 52, struct ifreq)	/* set IF mtu */
#define	SIOCGIFPHYS	_IOWR('i', 53, struct ifreq)	/* get IF wire */
#define	SIOCSIFPHYS	 _IOW('i', 54, struct ifreq)	/* set IF wire */
#define	SIOCSIFMEDIA	_IOWR('i', 55, struct ifreq)	/* set net media */
#define	SIOCGIFMEDIA	_IOWR('i', 56, struct ifmediareq) /* get net media */

#define	SIOCSIFGENERIC	 _IOW('i', 57, struct ifreq)	/* generic IF set op */
#define	SIOCGIFGENERIC	_IOWR('i', 58, struct ifreq)	/* generic IF get op */

#define	SIOCGIFSTATUS	_IOWR('i', 59, struct ifstat)	/* get IF status */
#define	SIOCSIFLLADDR	 _IOW('i', 60, struct ifreq)	/* set linklevel addr */

#define	SIOCSIFPHYADDR	 _IOW('i', 70, struct ifaliasreq) /* set gif addres */
#define	SIOCGIFPSRCADDR	_IOWR('i', 71, struct ifreq)	/* get gif psrc addr */
#define	SIOCGIFPDSTADDR	_IOWR('i', 72, struct ifreq)	/* get gif pdst addr */
#define	SIOCDIFPHYADDR	 _IOW('i', 73, struct ifreq)	/* delete gif addrs */
#define	SIOCSLIFPHYADDR	 _IOW('i', 74, struct if_laddrreq) /* set gif addrs */
#define	SIOCGLIFPHYADDR	_IOWR('i', 75, struct if_laddrreq) /* get gif addrs */

#define	SIOCGPRIVATE_0	_IOWR('i', 80, struct ifreq)	/* device private 0 */
#define	SIOCGPRIVATE_1	_IOWR('i', 81, struct ifreq)	/* device private 1 */

#define	SIOCSIFVNET	_IOWR('i', 90, struct ifreq)	/* move IF jail/vnet */
#define	SIOCSIFRVNET	_IOWR('i', 91, struct ifreq)	/* reclaim vnet IF */

#define	SIOCGIFFIB	_IOWR('i', 92, struct ifreq)	/* get IF fib */
#define	SIOCSIFFIB	 _IOW('i', 93, struct ifreq)	/* set IF fib */

#define	SIOCSDRVSPEC	_IOW('i', 123, struct ifdrv)	/* set driver-specific
								  parameters */
#define	SIOCGDRVSPEC	_IOWR('i', 123, struct ifdrv)	/* get driver-specific
								  parameters */

#define	SIOCIFCREATE	_IOWR('i', 122, struct ifreq)	/* create clone if */
#define	SIOCIFCREATE2	_IOWR('i', 124, struct ifreq)	/* create clone if */
#define	SIOCIFDESTROY	 _IOW('i', 121, struct ifreq)	/* destroy clone if */
#define	SIOCIFGCLONERS	_IOWR('i', 120, struct if_clonereq) /* get cloners */

#define	SIOCAIFGROUP	 _IOW('i', 135, struct ifgroupreq) /* add an ifgroup */
#define	SIOCGIFGROUP	_IOWR('i', 136, struct ifgroupreq) /* get ifgroups */
#define	SIOCDIFGROUP	 _IOW('i', 137, struct ifgroupreq) /* delete ifgroup */
#define	SIOCGIFGMEMB	_IOWR('i', 138, struct ifgroupreq) /* get members */

#endif /* !_SYS_SOCKIO_H_ */


code:
/*-
 * Copyright (c) 1982, 1986, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)socketvar.h	8.3 (Berkeley) 2/19/95
 *
 * $FreeBSD: release/9.0.0/sys/sys/sockopt.h 180948 2008-07-29 07:45:05Z kmacy $
 */
#ifndef _SYS_SOCKOPT_H_
#define _SYS_SOCKOPT_H_

#ifndef _KERNEL
#error "no user-servicable parts inside"
#endif

struct thread;
struct socket;

/*
 * Argument structure for sosetopt et seq.  This is in the KERNEL
 * section because it will never be visible to user code.
 */
enum sopt_dir { SOPT_GET, SOPT_SET };

struct	sockopt {
	enum	sopt_dir sopt_dir; /* is this a get or a set? */
	int	sopt_level;	/* second arg of [gs]etsockopt */
	int	sopt_name;	/* third arg of [gs]etsockopt */
	void   *sopt_val;	/* fourth arg of [gs]etsockopt */
	size_t	sopt_valsize;	/* (almost) fifth arg of [gs]etsockopt */
	struct	thread *sopt_td; /* calling thread or null if kernel */
};

int	sosetopt(struct socket *so, struct sockopt *sopt);
int	sogetopt(struct socket *so, struct sockopt *sopt);
int	sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen);
int	sooptcopyout(struct sockopt *sopt, const void *buf, size_t len);
/* XXX; prepare mbuf for (__FreeBSD__ < 3) routines. */
int	soopt_getm(struct sockopt *sopt, struct mbuf **mp);
int	soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
int	soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
int	do_getopt_accept_filter(struct socket *so, struct sockopt *sopt);
int	do_setopt_accept_filter(struct socket *so, struct sockopt *sopt);
int	so_setsockopt(struct socket *so, int level, int optname,
	    void *optval, size_t optlen);

#endif /* _SYS_SOCKOPT_H_ */


code:
/*-
 * Copyright (c) 1982, 1986, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)socketvar.h	8.3 (Berkeley) 2/19/95
 *
 * $FreeBSD: release/9.0.0/sys/sys/sockstate.h 180948 2008-07-29 07:45:05Z kmacy $
 */
#ifndef _SYS_SOCKTATE_H_
#define _SYS_SOCKTATE_H_

/*
 * Socket state bits.
 *
 * Historically, this bits were all kept in the so_state field.  For
 * locking reasons, they are now in multiple fields, as they are
 * locked differently.  so_state maintains basic socket state protected
 * by the socket lock.  so_qstate holds information about the socket
 * accept queues.  Each socket buffer also has a state field holding
 * information relevant to that socket buffer (can't send, rcv).  Many
 * fields will be read without locks to improve performance and avoid
 * lock order issues.  However, this approach must be used with caution.
 */
#define	SS_NOFDREF		0x0001	/* no file table ref any more */
#define	SS_ISCONNECTED		0x0002	/* socket connected to a peer */
#define	SS_ISCONNECTING		0x0004	/* in process of connecting to peer */
#define	SS_ISDISCONNECTING	0x0008	/* in process of disconnecting */
#define	SS_NBIO			0x0100	/* non-blocking ops */
#define	SS_ASYNC		0x0200	/* async i/o notify */
#define	SS_ISCONFIRMING		0x0400	/* deciding to accept connection req */
#define	SS_ISDISCONNECTED	0x2000	/* socket disconnected from peer */

/*
 * Protocols can mark a socket as SS_PROTOREF to indicate that, following
 * pru_detach, they still want the socket to persist, and will free it
 * themselves when they are done.  Protocols should only ever call sofree()
 * following setting this flag in pru_detach(), and never otherwise, as
 * sofree() bypasses socket reference counting.
 */
#define	SS_PROTOREF		0x4000	/* strong protocol reference */

/*
 * Socket state bits now stored in the socket buffer state field.
 */
#define	SBS_CANTSENDMORE	0x0010	/* can't send more data to peer */
#define	SBS_CANTRCVMORE		0x0020	/* can't receive more data from peer */
#define	SBS_RCVATMARK		0x0040	/* at mark on input */

struct socket;

void	soisconnected(struct socket *so);
void	soisconnecting(struct socket *so);
void	soisdisconnected(struct socket *so);
void	soisdisconnecting(struct socket *so);
void	socantrcvmore(struct socket *so);
void	socantrcvmore_locked(struct socket *so);
void	socantsendmore(struct socket *so);
void	socantsendmore_locked(struct socket *so);
#endif /* _SYS_SOCKTATE_H_ */